For the NS group, interscalene/axillary block will be performed in the standard method using a nerve stimulator attached to a four centimeter Stimuplex (B Braun) needle. Following application of routine monitors, supplemental oxygen via facemask, and intravenous sedation, the skin overlying the brachial plexus will be anesthetized. The Stimuplex needle will then be inserted and guided into a position in close proximity to the brachial plexus using an endpoint of muscle twitches involving the hand at a stimulus intensity of less than 0.5 milliamps to the satisfaction of the operator. Forty (40) milliliters of 0.5 percent Bupivicaine with 1.5% Mepivicaine with 1:200,00 of epinephrine will be injected incrementally with intermittent aspiration. This block is chosen for the study because of its widespread use for a variety of shoulder procedures and for its low incidence of complications. The quoted success rate in the literature for interscalene block ranges from 70 to 95 percent.